Specifications

ManualsBrandsMestek ManualsGas HeaterIIEB-11

IIEB-11

J30-05390

08/12

INSTALLATION INSTRUCTIONS & PARTS LIST

POWER VENTED GAS FIRED BLOWER UNIT HEATERS

Model No.

Serial No.

FOR YOUR SAFETY

The use and storage of gasoline or other ﬂ ammable vapors and liquids in open containers in

the vicinity of this appliance is hazardous.

ATTENTION: READ THIS MANUAL AND ALL LABELS ATTACHED TO THE UNIT CAREFULLY BEFORE

ATTEMPTING TO INSTALL, OPERATE OR SERVICE THESE UNITS! CHECK UNIT DATA PLATE FOR TYPE OF

GAS AND ELECTRICAL SPECIFICATIONS AND MAKE CERTAIN THAT THESE AGREE WITH THOSE AT POINT

OF INSTALLATION. RECORD THE UNIT MODEL AND SERIAL No.(s) IN THE SPACE PROVIDED. RETAIN FOR

FUTURE REFERENCE.

APPROVED FOR USE IN CALIFORNIA

INSTALLER'S RESPONSIBILITY

Installer Please Note: This equipment has been test fired and inspected. It has been

shipped free from defects from our factory. However, during shipment and installation,

problems such as loose wires, leaks or loose fasteners may occur. It is the installer's

responsibility to inspect and correct any problems that may be found.

Install, operate and maintain unit in accordance with manufacturer's

instructions to avoid exposure to fuel substances or substances from incomplete

combustion which can cause death or serious illness. The state of California

has determined that these substances may cause cancer, birth defects, or other

reproductive harm.

Improper installation, adjustment, alteration, service or maintenance

can cause property damage, injury or death. Read the installation, operating and

maintenance instructions thoroughly before installing or servicing this equipment

FOR YOUR SAFETY

If you smell gas:

1. Open windows.

2. Don’t touch electrical switches.

3. Extinguish any open ﬂ ame.

4. Immediately call your gas supplier.

ENERGY

PERFORMANCE

VERIFIED

RENDEMENT

ENERGETIQUE

VERIFIE

RECEIVING INSTRUCTIONS

Inspect shipment immediately when

received to determine if any damage

has occurred to the unit during

shipment. After the unit has been

uncrated, check for any visible

damage to the unit. If any damage is

found, the consignee should sign

the bill of lading indicating such

damage and immediately file claim

for damage with the transportation

company.

260 NORTH ELM ST., WESTFIELD, MA 01085

TEL: (413) 568-9571 FAX: (413) 562-8437

www.mestek.com

Summary of content (32 pages)

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IIEB-11 J30-05390 INSTALLATION INSTRUCTIONS & PARTS LIST POWER VENTED GAS FIRED BLOWER UNIT HEATERS ATTENTION: READ THIS MANUAL AND ALL LABELS ATTACHED TO THE UNIT CAREFULLY BEFORE ATTEMPTING TO INSTALL, OPERATE OR SERVICE THESE UNITS! CHECK UNIT DATA PLATE FOR TYPE OF GAS AND ELECTRICAL SPECIFICATIONS AND MAKE CERTAIN THAT THESE AGREE WITH THOSE AT POINT OF INSTALLATION. RECORD THE UNIT MODEL AND SERIAL No.(s) IN THE SPACE PROVIDED. RETAIN FOR FUTURE REFERENCE. Model No. Serial No.
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TABLE OF CONTENTS ELECTRICAL CONNECTIONS ................................ 11 VENTING................................................. 12, 13, 14, 15 OPERATION Spark Ignition.................................................. 16, 17 Main Burner Orifice Schedule............................... 18 Adjustments .......................................................... 18 MAINTENANCE Servicing & Cleaning ............................................ 19 TROUBLESHOOTING GUIDE ...............
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GENERAL SAFETY INFORMATION Failure to comply with the general safety information may result in extensive property damage, severe personal injury or death. Use only the fuel for which the heater is designed (see rating plate). Using LP gas in a heater that requires natural gas, or vice versa, will create the risk of gas leaks, carbon monoxide poisoning and explosion. This product must be installed by a licensed plumber or gas fitter when installed within the Commonwealth of Massachusetts.
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Table 1 – Performance and Dimensional Data – Power Vented Blower Unit Heater Unit Size PERFORMANCE DATA ‡ Input BTU/Hr (kW) Output BTU/Hr (kW) Thermal Efficiency (%) Free Air Delivery CFM (cu. m/s) Air Temperature Rise F Deg. (C Deg.) Outlet Velocity FPM (m/s) Full Load Amps at 115V MOTOR DATA : Motor HP Motor (kW) Motor Type R.P.M. Amps @ 115V DIMENSIONAL DATA in.
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INSTALLATION Do not install unit heaters in corrosive or flammable atmospheres! Premature failure of, or severe damage to the unit will result! PUBLIC GARAGES: In repair garages, unit heaters must be at least 8 feet (2.4m) above the floor. Refer to the latest edition of NFPA No. 88B, Repair Garages. Avoid locations where extreme drafts can affect burner operation. Unit heaters must not be installed in locations where air for combustion would contain chlorinated, halogenated or acidic vapors.
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INSTALLATION (continued) The installation is to be adjusted to obtain an air throughput within the range specified on the rating plate. Make certain that the lifting methods used to lift the unit heater and the structure to which the heater is to be mounted is capable of safely supporting its weight. Under no circumstances must the gas lines, venting system or the electrical conduit be used to support the heater or should any other objects (ie.
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INSTALLATION – GAS SUPPLY PIPING/SIZING To avoid equipment damage or possible personal injury, do not connect gas piping to this unit until a supply line pressure/leak test has been completed. Connecting the unit before completing the pressure/leak test may damage the unit gas valve and result in a fire hazard. Do not rely on shut off valve to isolate the unit while conducting gas pressure/leak tests. These valves may not be completely shut off, exposing the unit gas valve to excessive pressure and damage.
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PIPE INSTALLATION Check all pipe joints for leakage using a soap solution or other approved method. Never use an open flame or severe personal injury or death may occur. 1. Install the gas piping in accordance with applicable local codes. 2. Check gas supply pressure. Each unit heater must be connected to a manifold pressure and a gas supply capable of supplying its full rated capacity as specified in Table 4. A field LP tank regulator must be used to limit the supply pressure to maximum of 14 inches W.C.
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INSTALLATION (continued) BLOWER DRIVE ADJUSTMENT BLOWER SET UP The drive ratio of the motor and blower sheaves has been preset at the factory for a temperature rise of 65°F at 0 inch W.C. If the unit is to be operated under different air flow or pressure requirements, the drive ratio must be altered by means of the adjustable sheave on the blower motor, Figure 7. 1. Ensure that all packing material, support blocks, etc. have been removed from the unit. 2.
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Table 5 - Motor Data H.P. VOLTAGE PH RPM SHAFT FRAME STARTER SIZE 1/2 1/2 3/4 3/4 1 1 1-1/2 1-1/2 2 3 115/230 208/230/460 115/230 208/230/460 115/230 208/230/460 115/230 208/230/460 208/230/460 208/230/460 1 3 1 3 1 3 1 3 3 3 1725 1725 1725 1725 1725 1725 1725 1725 1725 1725 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/8 56 56 56 56 56 56 56 56 56 56 — 00 — 00 — 00 — 00 0/00 0 NOTES: 1. Motors are typically permanent lube, ball bearing drive with class “B” windings. 2. All motors through 3 H.P.
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ELECTRICAL CONNECTIONS HAZARDOUS VOLTAGE! disconnect ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING. Failure to disconnect power before servicing can cause severe personal injury or death. Standard units are shipped for use on 115 volt, 60 hertz single phase electric power. The motor name-plate and electrical rating on the transformer should be checked before energizing the unit heater electrical system. All external wiring must conform to the latest edition of the ANSI/NFPA No.
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VENTING FOR POWER VENTED (CATEGORY III) UNIT HEATERS All unit heaters must be vented! All venting installations shall be in accordance with the latest edition of Part 7, venting of Equipment of the National Fuel Gas Code, ANSI Z223.1, or applicable provisions of local building codes for natural or power vented units. The venting system for these appliances shall terminate at least four feet (1.2m) below, four feet (1.2m) horizontal from, or one foot (0.
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Use single wall pipe constructed of 26 gauge galvanized steel or material or equivalent durability and corrosion resistance for the vent system. For installation in Canada, vent pipe must conform with local building codes, or in absence of local codes, with current CSA B149.1/B149.2 installation codes for gas burning appliances and equipment. Insulate single wall vent pipe exposed to cold air or running through unheated areas.
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Figure 13 Figure 14 14
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Figure 15 Figure 16 15
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OPERATION POWER VENTED BLOWER UNITS INTERMITTENT (SPARK) PILOT IGNITION EXPLANATION OF CONTROLS: 1. The unit heater is equipped with a dual automatic gas valve and electric ignition device (separate from the gas valve on most models) which provide the following functions: a. The unit heater is equipped with a power vent system consisting of a power venter motor and blower, pressure switch, and sealed flue collector in place of the conventional draft diverter. 4.
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Figure 17 - Burner Components Intermittent Pilot Ignition BURNER DRAWER COMMON PARTS: 1. MAIN BURNERS 2. BURNER MANIFOLD 3. AIR SHUTTERS 4. BURNER SPRINGS 5. MAIN BURNER ORIFICE 6. TRANSFORMER 7. PILOT TUBING CONTROLS: (REFER TO UNIT WIRING DIAGRAM) 8A. MAIN GAS VALVE (HONEYWELL) 8B. MAIN GAS VALVE (WHITE RODGERS) 9. HONEYWELL IGNITOR 10. HONEYWELL PILOT BURNER 11. HONEYWELL PILOT ORIFICE 12. HONEYWELL ELECTRODE/SENSOR LEAD 13.
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3. The adjusted manifold pressure should not vary more than 10% from the pressure specified in Table 7. GAS INPUT RATE Check the gas input rate as follows. To calculate metric units, refer to general safety section for metric conversions/SI units): Table 7 - Main Burner Orifice Schedule* Never overfire the unit heater, as this may cause unsatisfactory operation or shorten the life of the heater. the life of the heater. 1. Turn off all gas appliances that use gas through the same meter as the unit heater.
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PILOT ADJUSTMENT 1. Remove the pilot adjustment cap. 2. Adjust the pilot screw to provide a properly sized flame. 3. A proper pilot flame is a soft steady flame that envelopes 3/8 to 1/2 inch (9.5 to 12.7mm) of the flame sensor tip. 4. Replace the pilot adjustment cap. MANIFOLD PRESSURE ADJUSTMENT If the manifold pressure requires minor adjustment, remove the cap from the pressure regulator and turn the adjustment screw clockwise to increase the pressure, or counterclockwise to decrease the pressure.
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Table 8 - Power Vented Blowers Troubleshooting Guide SYMPTOMS A. Flame lifting from burner ports. POSSIBLE CAUSE(S) 1. Pressure regulator set too high. 2. Defective Regulator. 3. Burner orifice too large. CORRECTIVE ACTION 1. Reset manifold pressure. Refer to “Operation”. 2. Replace regulator section of combination gas valve or complete valve. 3. Check with local gas supplier for proper orifice size and replace. Refer to “Operation”. B. Flame pops back. 1. Excessive primary air. 2.
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Power Vented Blowers Troubleshooting Guide SYMPTOMS H. continued POSSIBLE CAUSE(S) 9. Loose wiring. 10. Defective ignition control. CORRECTIVE ACTION 9. Check and tighten all wiring connections per diagrams. 10. Replace, if necessary. Also see W, X & Y symptoms. J. Condensation of water vapor. 1. Improper venting. 1. Refer to “Installation, Venting”. K. Burner won't turn off. 1. Poor thermostat location. 2. Defective thermostat. 3. Improper thermostat or transformer wiring at gas valve. 4.
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Power Vented Blowers Troubleshooting Guide SYMPTOMS O. continued POSSIBLE CAUSE(S) 4. Lack of power at unit. P. Fan motor turns on and off while burner is operating. 1. Fan switch heater element improperly wired. 2. Defective fan switch. 3. Motor overload protector cycling ON and OFF. 4. Motor not properly oiled. Q. Fan motor will not stop. R. Not enough heat. 1. Be sure fan switch heater terminals are connected per diagrams. 2. Replace fan switch. 3.
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Power Vented Blowers Troubleshooting Guide SYMPTOMS X. Pilot lights — Main valve does not energize. POSSIBLE CAUSE(S) 1. Loose S8600 connections. 2. Cracked or broken sensor ceramic. 3. Check sensor/spark lead for continuity. 4. Measure 24 volts from term. MV to term. MV/PV. Y. Hi-Limit switch tripping. CORRECTIVE ACTION 1. Check connections-term. MV feeds main valve. 2. Replace pilot assembly. 3. Replace if needed. 4. If present, replace main valve; if not, replace S8600 Igniter. 1.
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IDENTIFICATION OF PARTS BLOWER UNIT HEATERS Figure 19 - Component Parts (Bottom View) MOTOR BELT GUARD BLOWER WHEEL/HOUSING GAS VALVE ELECTRIC IGNITOR BURNER DRAWER COMPARTMENT LIGHTING INSTRUCTIONS/ DATA PLATE MAIN BURNERS PILOT ACCESS DOOR/ OBSERVATION PORT CARRYOVER Figure 21 - Burner Assembly Parts Figure 20 - Internal Furnace Components 1. HEAT EXCHANGER 2. FLUE COLLECTOR 3.
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Figure 22 - Power Venter Assembly REF. NO. 1 2 3 4 5 6 7 8 9 10 11 12 REF. NO. 13 14 15 16 17 18 19 20 21 22 23 24 25-28 DESCRIPTION Blower Housing Assembly Speed Nut Motor Washer, Plain Plate Adapter Blower Wheel* Mounting Bracket (Pressure Switch) Mounting Bracket (Junction Box) Screw, S.T. Screw, Machine (L = 3/4") Nut, Keps (Ext.
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INSTALLATION INSTRUCTIONS FOR FIELD REPLACEMENT OF POWER VENTER MOTOR Never service any compartment without first disconnecting all electrical and gas supplies. Refer to unit’s wiring diagram. This replacement must be performed only by a qualified technician. NOTICE: All hardware (screws, nuts, washers) that will be removed from the unit will be reused for this motor replacement. DO NOT LOSE ANY OF THESE PARTS. Figure 23 - Identification of Parts REF. NO.
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HOW TO ORDER REPLACEMENT PARTS Please send the following information to your local representative. If further assistance is needed, contact the manufacturer's customer service department. • Model number • Serial Number (if any) • Part description and Number as shown in the Replacement Parts Catalog. LIMITED WARRANTY POWER VENTED GAS–FIRED BLOWER UNIT HEATERS 1.
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GAS EQUIPMENT START-UP Customer ____________________________________ Job Name & Number _________________________ PRE-INSPECTION INFORMATION With power and gas off. Type of Equip: Unit Heater Duct Furnace Indoor Rooftop Serial Number _________________________ Model Number __________________________ Name Plate Voltage: _____________ Name Plate Amperage: _____________ Type of Gas: Natural Tank Capacity _______ lbs.
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POWER VENTED BLOWER UNIT NUMBER DESCRIPTION Digit Item X X X X — 1 Prefix 2 UT 3 4 CA 5 6 7 8 FT FM GT 9 10 11 12 13 14 15 + IC AL GC SV MT MS AS (Internal use Only) Digit #1, 2 - Unit Type [UT] Digit #13 - Motor Type [MT] B2 - Power Vented Blower 1 - Open Drip Proof 2 - Totally Enclosed 3 - Premium Efficiency, Open Drip Proof 4 - Premium Efficiency, Totally Enclosed Digit #3, 4, 5 - Capacity [CA] 100 - 100,000 BTU/HR 125 - 125,000 BTU/HR 150 - 150,000 BTU/HR 175 - 175,000 BTU/HR 200 -
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NOTES: 30
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NOTES: 31
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260 NORTH ELM ST., WESTFIELD, MA 01085 TEL: (413) 568-9571 FAX: (413) 562-8437 www.mestek.